Item performance across native language groups on the Iranian National University Entrance English Exam: a nationwide study

Language Testing in Asia

Table 4 Results of uniform DIF analysis of items (IUUESEE 2016)

Item	Class A	DIF	DIF SE	Class B	DIF	DIF SE	DIF Contrast	Welch t	df	p
3	Kurdish	−0.60	0.14	Persian	−1.06	0.09	0.46	2.81	482	0.0051
4	Kurdish	0.54	0.15	Luri	0.04	0.20	0.51	2.02	283	0.0440
14	Kurdish	1.21	0.20	Persian	0.55	0.11	0.65	2.92	290	0.0038
23	Kurdish	−0.01	0.20	Persian	1.24	0.15	−1.25	−4.97	266	0.0000
24	Kurdish	1.27	0.20	Persian	0.71	0.11	0.55	2.37	279	0.0186
29	Kurdish	−1.19	0.13	Persian	−1.70	0.09	0.51	3.15	618	0.0017
50	Kurdish	0.50	0.21	Luri	−0.26	0.28	0.76	2.18	127	0.0313
50	Kurdish	0.50	0.21	Persian	−0.17	0.13	0.67	2.72	217	0.0070
54	Kurdish	−0.09	0.18	Luri	0.51	0.23	−0.60	−2.03	206	0.0440
61	Kurdish	0.87	0.21	Luri	0.00	0.26	0.87	2.60	163	0.0102
66	Kurdish	1.69	0.28	Persian	0.97	0.14	0.72	2.29	152	0.0236